
class Person:
    def __init__(self):
        self.name = None;
        self.age = 0
    def isAlive(self):
        return age
    def getName(self):
        return self.name;
    def setName(self, name):
        self.name = name
    def getAge(self):
        return self.age
    def setAge(self, age):
        self.age = age;

class Student(Person):
    def __init__(self):
        Person.__init__(self)
        self.no=0
        self.math=0
    def setNo(self, No):
        self.no = No
    def getNo(self):
        return self.no
    def setMath(self, Math):
        self.math = Math
    def getMath(self):
        return self.math

if __name__=='__main__':
    m_stu = Student();
    m_stu.setName("liming");
    print(m_stu.getName())

